is doing something and taking part with germany and the netherlands. alisyn: you say this is a defensive mission only, but could there be a scenario in which these 400 troops end up having to enforce a no-fly-zone over syria? >> that is a potential, because you don't need to necessarily do that with aircraft. depending on where the missile batteries are put in place, and the range, those missiles are perfectly capable of not only shooting down theater ballistic missiles which is the first thing that everyone would think of, the scuds to be blunt, everything is thinking about the scuds right now but you could use that system to target manned aircraft as well or uav's. alisyn: we've heard from leaders insurance nationally this week who believe that the bashar al-assad regime is close to collapsing. and if you agree how close? >> it sounds like it. even the russians are talking about evacuating their people. they have a lot of advisers in there, they have embassy personnel in there as well, military advisers, and so if they are talking about that, then lo